Bafang M620 upgrade?

[Tom@WashDC]

Interesting, how do I configure the N620 for 2200watts? The display shows a max of 1500.

Volts X Amps = Watts
52 * X = 2200
X = 42.3

You will need to install a controller rated at 42+ nominal amps.

Don't do it. If your motor is UART, get a cable and program the torque settings.

@smorgasbord has a whole thread on it.

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[JRA]

Try a lower gear ratio and a higher cadence. I know my 52v M620 performs on hills much better using that combo. At least as long as the voltage isn't below 45 or so......

 

[Cybersnow]

The motor I have is the CAN version. The manufacturer set it for off road which gave me the 1,000 watts vs the 750. It sounds like a real complicated and expensive process. I wonder if there are some other bike companies out there building small batch off road e bikes, I heard that biketrix is making one that runs at a max of 2300 watts, but I dont know anything about them.

 

[Tom@WashDC]

The motor I have is the CAN version. The manufacturer set it for off road which gave me the 1,000 watts vs the 750. It sounds like a real complicated and expensive process. I wonder if there are some other bike companies out there building small batch off road e bikes, I heard that biketrix is making one that runs at a max of 2300 watts, but I dont know anything about them.

CAN version you are out of luck as far as programming is concerned.
I honestly don't believe you have a lack of "power" problem. I have the same motor and Rohloff hub. My bike will will climb any hill at speed, for a long duration without overexertion. You may have some other problem. Have you discussed the bike's performance with the supplier?

 

[Cybersnow]

Took the bike out for a 20 miler and noticed no issues on normal roads. It has no issues climbing the grades, it becomes about using the right gear, adding power and keeping cadence. On the way home my wife wanted to race up a long steep grade and off we went. Her bike is a 750 watt rear motor and she weighs about 100 lbs. I down shifted from 11 to 9 and took off after her. I passed her about halfway up and noticed I was doing about 11mph. It was a bit of a workout but it tells me that at my 200lbs I need to spend more time on the bike!

 

[il Munduato]

smh...

 

[Tom@WashDC]

Took the bike out for a 20 miler and noticed no issues on normal roads. It has no issues climbing the grades, it becomes about using the right gear, adding power and keeping cadence. On the way home my wife wanted to race up a long steep grade and off we went. Her bike is a 750 watt rear motor and she weighs about 100 lbs. I down shifted from 11 to 9 and took off after her. I passed her about halfway up and noticed I was doing about 11mph. It was a bit of a workout but it tells me that at my 200lbs I need to spend more time on the bike!

How many teeth on your front chain ring? How many on the rear? Just curious.

 

[Cybersnow]

55/19. It came with 55/22 but I was having trouble keeping up with the ebike group on the flats. The changed fixed that and didnt seem to effect my climbing other than changing gear selection. I guess what I might have to consider next season is one of type 3 mountain bikes or maybe something like a totally off road bike like a Luna Cycle